* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #ffffff;
    color: #000000;
    font-family: 'Courier New', Courier, Monaco, monospace;
    line-height: 1.6;
    padding: 20px;
    max-width: 900px;
    margin: 0 auto;
    /* Better text rendering on mobile */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Prevent text size adjustment on mobile */
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

.ascii-art {
    white-space: pre;
    font-size: 14px;
    line-height: 1.2;
    margin: 20px 0;
    overflow-x: auto;
    /* Smooth scrolling on iOS */
    -webkit-overflow-scrolling: touch;
}

.ascii-logo {
    font-size: 12px;
    text-align: center;
    margin: 30px 0;
    font-weight: bold;
    padding: 20px;
    border: 3px solid #000000;
    background-color: #ffffff;
    box-shadow: 8px 8px 0px 0px #000000;
}

.ascii-box {
    border: 1px solid #000000;
    padding: 15px;
    margin: 20px 0;
}

h1, h2, h3 {
    margin: 30px 0 15px 0;
    font-weight: bold;
    text-decoration: none;
}

h1 {
    font-size: 24px;
    border-bottom: 2px solid #000000;
    padding-bottom: 10px;
}

h2 {
    font-size: 18px;
    border-bottom: 1px solid #000000;
    padding-bottom: 5px;
}

h3 {
    font-size: 16px;
}

p {
    margin: 10px 0;
}

ul, ol {
    margin: 10px 0 10px 30px;
}

li {
    margin: 5px 0;
}

a {
    color: #000000;
    text-decoration: underline;
    font-weight: bold;
    /* Remove tap highlight on mobile */
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    /* Better touch targets */
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

a:hover, a:active {
    background-color: #000000;
    color: #ffffff;
}

.nav {
    text-align: center;
    margin: 30px 0;
    padding: 15px;
    border-top: 1px solid #000000;
    border-bottom: 1px solid #000000;
}

.nav a {
    margin: 0 15px;
    text-decoration: none;
}

.nav a:before {
    content: "[ ";
}

.nav a:after {
    content: " ]";
}

.button {
    display: inline-block;
    padding: 10px 20px;
    border: 2px solid #000000;
    text-decoration: none;
    margin: 10px 5px;
    background-color: #ffffff;
    color: #000000;
    font-weight: bold;
    /* Better touch interaction */
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.2);
    touch-action: manipulation;
    /* Ensure minimum touch target size */
    min-height: 44px;
    min-width: 44px;
}

.button:hover, .button:active {
    background-color: #000000;
    color: #ffffff;
}

.footer {
    text-align: center;
    margin-top: 50px;
    padding-top: 20px;
    border-top: 2px solid #000000;
    font-size: 12px;
}

.section {
    margin: 40px 0;
}

.feature-list {
    margin: 20px 0;
}

.feature-list li:before {
    content: "▸ ";
    font-weight: bold;
}

.divider {
    text-align: center;
    margin: 30px 0;
    font-size: 16px;
}

.app-icon-hero {
    width: 200px;
    height: 200px;
    border-radius: 20px;
    box-shadow: 8px 8px 0px 0px #000000;
    border: 2px solid #000000;
}

.preview-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    margin: 40px 0;
}

.preview-side-by-side {
    margin-top: 20px;
}

.preview-item {
    flex: 0 1 300px;
    text-align: center;
}

.preview-item-full {
    flex: 1 1 100%;
    max-width: 400px;
    margin: 0 auto;
}

.preview-item h3 {
    font-size: 16px;
    margin-bottom: 20px;
    border-bottom: 1px solid #000000;
    padding-bottom: 10px;
}

.preview-screenshot {
    width: 100%;
    max-width: 300px;
    height: auto;
    border: 3px solid #000000;
    border-radius: 10px;
    box-shadow: 6px 6px 0px 0px #000000;
}

.preview-caption {
    font-size: 13px;
    margin-top: 15px;
    font-style: italic;
}

.voice-playback {
    margin-top: 50px;
    text-align: center;
}

.voice-playback h3 {
    font-size: 18px;
    margin-bottom: 25px;
    border-bottom: 2px solid #000000;
    padding-bottom: 10px;
    display: inline-block;
    min-width: 300px;
}

.voice-animation {
    background: #f5f5f5;
    padding: 25px;
    border: 2px solid #000000;
    box-shadow: 5px 5px 0px 0px #000000;
    max-width: 700px;
    margin: 0 auto;
    font-size: 13px;
    line-height: 1.4;
}

/* Tablet and smaller devices */
@media (max-width: 768px) {
    .preview-container {
        gap: 30px;
    }

    .preview-screenshot {
        max-width: 250px;
        box-shadow: 4px 4px 0px 0px #000000;
    }

    .preview-side-by-side {
        flex-direction: column;
    }

    .voice-animation {
        font-size: 11px;
        padding: 15px;
        box-shadow: 3px 3px 0px 0px #000000;
    }

    .app-icon-hero {
        width: 150px;
        height: 150px;
        box-shadow: 5px 5px 0px 0px #000000;
    }

    body {
        padding: 10px;
    }

    .ascii-logo {
        font-size: 10px;
        padding: 15px;
    }

    .ascii-art {
        font-size: 12px;
    }

    .nav a {
        margin: 5px 10px;
        display: inline-block;
    }

    h2 {
        font-size: 16px;
    }
}

/* Mobile phones - Samsung Galaxy, iPhone */
@media (max-width: 480px) {
    body {
        padding: 8px;
        font-size: 14px;
    }

    .ascii-logo {
        font-size: 8px;
        padding: 10px;
        border: 2px solid #000000;
        box-shadow: 4px 4px 0px 0px #000000;
        margin: 15px 0;
    }

    .ascii-art {
        font-size: 7px;
        line-height: 1.1;
    }

    .app-icon-hero {
        width: 120px;
        height: 120px;
        box-shadow: 4px 4px 0px 0px #000000;
    }

    /* Touch-friendly buttons */
    .button {
        display: block;
        width: 100%;
        max-width: 300px;
        margin: 10px auto;
        padding: 15px 20px;
        font-size: 14px;
        text-align: center;
    }

    /* Stack navigation links vertically on very small screens */
    .nav {
        padding: 10px;
        margin: 20px 0;
    }

    .nav a {
        display: block;
        margin: 10px 0;
        padding: 8px;
    }

    h1 {
        font-size: 20px;
    }

    h2 {
        font-size: 15px;
        overflow-wrap: break-word;
    }

    h3 {
        font-size: 14px;
    }

    .preview-container {
        gap: 20px;
    }

    .preview-screenshot {
        max-width: 220px;
        box-shadow: 3px 3px 0px 0px #000000;
        border: 2px solid #000000;
    }

    .preview-item {
        flex: 0 1 100%;
    }

    .section {
        margin: 25px 0;
    }

    ul, ol {
        margin-left: 20px;
    }

    .footer {
        font-size: 11px;
        margin-top: 30px;
    }

    .footer .ascii-art {
        font-size: 6px;
    }

    /* Ensure ASCII boxes don't overflow */
    .ascii-box {
        padding: 10px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Better touch targets for links on mobile */
    a {
        padding: 4px 2px;
    }

    .nav a {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* Very small phones (iPhone SE, older Android) */
@media (max-width: 375px) {
    .ascii-logo {
        font-size: 7px;
        padding: 8px;
    }

    .ascii-art {
        font-size: 6px;
    }

    .app-icon-hero {
        width: 100px;
        height: 100px;
    }

    body {
        font-size: 13px;
        padding: 5px;
    }

    .button {
        padding: 12px 15px;
        font-size: 13px;
    }

    .preview-screenshot {
        max-width: 200px;
    }
}